Lock



H. G. VOIGHT.

LOCK.

APPLICATION FILED JUNE 16, 1919.

Patented Aug. 11, 1922.

ATTORNEY HENRY e. VQIGHT, or New PANY, or NEW HAVEN,

HAVEN, CONNECTICUT, ASSIGNOR TO SARGEN'I. & COM- CONNECTICUT, A CORPORATION OF CONNECTICUT.

LLOCK.

Specification of Letters Patent.

Patented Aug. 1, 1922.

Original application filed April 9, 1919, Serial No. 288,668. Divided and this application filed June 16, 1919. Serial No. 304,449.

To aZZ whom it may concern:

Be it known that I, HENRY G. Voroirr, a citizen of the United States, residing in New Haven, county of New Haven, and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

This invention relates to pin tumbler locks, and more particularly to a pin tumblerlock which is so constructed that its key barrel may be rotated from its unlocked to its locked position without the use of a key.

One object of my invention is to provide a pin tumbler lock which is so constructed that the key may be removed from its. key barrel when the latter is in its unlocked position, and to provide means whereby the key barrel may be manually rota-ted to its locked position without the use of a key.

Another object of my invention is to provide a pin tunrbler lock with means for fric tionally holding its key barrel in its unlocked position to prevent the same from being accidentally rotated from its unlocked to its locked position.

To these and other ends, the invention consists in the novel features and" combinations of parts to be hereinafter described and claimed.

In the accompanying Fig. 1 is a vertical drawing: section view of the upper end of a gear shift lever having my invention applied thereto.

Fig. 2 is a sectional view taken on the line 2-2 of Fig. 1 showing the key barrel in its locked position; and

regard Fig. 3 is a view similarvto Fig. 2, but showing the key barrel in its unlocked position.

I have illustrated my invention as mounted in the knob 10 upon the upper end ofa gear shift lever 11, where it is mounted to operated means for locking the lever 11 in the desired position. This particular use of my pin tumbler lock is fully disclosed in m copending application, Serial No. 288,668, filed April 9, 1919, of which the present case is a. division. However, I desire it distinctly understood that I do not my pin tumbler look as limited in its use to its application upon levers, since the lock herein disclosed is well adapted for various uses.

In the upper end of the knob 10 is preferably formed a relatively large cylindrical socket 12, in which my pin tumbler lock, designated in its entirety by the numeral 13 is mounted. The socket 12 is formed eccentrically within the knob 10 in order that the key barrel 14 within the lock casing 13 will lie in alignment with the axis of the'gear lever 11, while the pin tumbler extensions 15 and 16, with which the cylinder lock is provided, lie in the clearance space formed by the eccentric socket 12. The upper end of the knob 10 is preferably dished or hollowed out to form a shallow concaved seat, as shown, the same being cut away to form an annular rabbet 17 and the escutcheon 18 formed upon the pin tumbler lock is preferably likewise curved and is constructed to be seated within the upper end of the knob 10, 'so that the curved outer face of the escutcheon lies flush with the upper edge of the rabbet. The object in cutting away the upper end of theknob 10 and in curving the escutcheon 18 is to form a clearance space in order that the knob 19 formed upon the outer end of the key barrel may be grasped by the fingers to rotate the same from its unlocked to its locked position, after the key has been removed from its key barrel. In the particular instance shown, the inner end of the key barrel 14 is operatively connected by means of a pin 20 to a flexible shaft 21, which shaft is rotatably mounted in a drillhole extending longitudinally within the gear shiftlever 11. The cylinder lock 13 is preferably secured in place within the knob 10 by means of a pin 22, which extends transversely through the knob and through a notch in the lock casing 13, as shown in the drawing.

The means by which the key barrel of my lock may be rotated from its unlocked to its locked position after the key has been removed will now 'be described. Within the pin tumbler extension 15 are mounted a plurality of pin tumblers 23, which cooperate with the key barrel 14, in the usual manner, to lock the key barrel against rotation, while in the pin tumbler extension 16 are slidably mounted a plurality of pin tumblers 24, which do not operate in the usual manner, since these pin tumblers are constructed in such a manner that they will not be permitted to move into locking engagement with the key barrel. These pin tum blers 24 are' preferably too large in diameter to enter into. lockingiengagement with the key barrel, but are positioned to align with and abut against the outer end of the pin tumblers 25 slidably mounted within the key barrel, the arrangement being such that after the key barrel has been rotated by means of the proper key from its locked position (as shown in Fig. 2) to its unlocked position (as shown in Fig. 3), the

key may then be removedfrom its key barrel, since the sockets formed within the pin tumbler extension 16 will permit the pins .25 to move outwardly sufficiently to clear the bits of the key and as soon as the key is removed, the pins 25 will be forced back into their key barrel by the large pins 24.

It will be understood that in order that a key may be withdrawn from its key barrel,

when the latter is in its unlocked position, some means must be provided for permit- I ting the pins within the key barrel to move outwardly sufficiently to. permit these pins to clear the bits of the key, and furthermore, after these pins have been moved outwardly beyond the periphery of the key barrel by the removal of the key, means must also be provided for forcing these pins into their key barrel again in order that the same may be rotated toits locked position. In order to prevent the key barrel 14 from beingaccidentally rotated from its unlocked to its locked position, after the key has been removed from the same, the inner ends of the large pin tumblers 24 are rounded, as shown, so that the rounded portion of these pins will engage the sockets in which pins 25 slide, as shown in Fig. 3.

From the above description, when read in connection with the drawing, it will be seen that the pin tumblers 23 and 25 operate in the usual manner to lock the key barrel 14 against rotation, and that when it is desired to remove the key from its key barrel after the latter has been turned toits unlocked position, this may be readily done,

due to the sockets in the pin tumbler exten-,

sion 16. which permit the pins 25 to move outwardly sufliciently to clear the bits of the key, and it will be understood that thekey barrel will be frictionally held in its unlocked position by the pins 24, as shown in Fig. 3, while the key barrel may be rotated' from its unlocked to its locked position, whenever desired, without the use of a key by simply grasping the knob 19, with the fingers and rotating the same to its locked position. 1

Since this application, as above stated, is

a division of a copending application, it has been necessary to illustrate my pin tumbler ably mounted in said case and movable into.

frictional engagement with the pin tumbler sockets of the key barrel, said last mentioned pin tumblers provided with means for preventing the same from moving into locking engagement with said key barrel. I

2. In combination with a pin tumbler lock provided with a case, a key barrel therein and pin tumblers for locking said key barrel against rotation, means permitting the removal of the key from said key barrel when the latter is turned to its unlocked position, comprising a second set of pin tumblers slidably mounted in said case and constructed to frictionally engage the pin tumbler sockets within said key barrel to thereby prevent the same from being accidentally rotated from its unlocked to its locked position, and manually operable met s formed upon the outer end of said key barrel to rotate the same from its unlocked to its locked position.

3. In combination with a pin tumbler lock provided with a case, a-key barrel and pin tumblers for locking said barrel against rotation, means permitting the removal of the key from said key barrel when the latter is turned to its unlocked position, comprising a second set'of'pin tumblers slidably mount: ed in said case, positioned to align with the pin tumbler sockets of said key barrel and having a configuration to prevent the same from moving into locking engagement with said key barrel, but to allow them to move into frictional engagement therewith.

4. In combination with a pin tumbler lock provided with a case, a key barrel and pin tumblers for locking said key barrel against rotation, means permitting the removal of the key from its key barrel when the same is turned to its unlocked position, said means comprising a plurality of pin tumblers slidably mounted within said case in alignment with the pin tumbler sockets within said key barrel, said last mentioned pin tumblers possessing a greater diameter than said pin tumbler sockets and having their ends rounded to frictionally engage said pin tumbler sockets.

5. A cylinder lock comprising a' case, a key barrel rotatable therein, pin tumblers for locking said key barrel against rotation,

and a second set of pin tumblers within said pin tumbler sockets of said key barrel but prevented from entering into locking engagement with said sockets.

6. A cylinder lock comprising a case, a key barrel therein provided with pin tumbler sockets, a set of pin tumblers slidably mounted within .said case and movable into locking engagement with said key barrel, and a second setof pin tumblers within said case movable into frictional holding engagement only with said sockets and constructed tobe prevented from moving into locking engagement therewith.

7. A cylinder lock comprising a case, a key barrel rotatable therein, pin tumblers slidably mounted in said case and moving into locking engagement with said key bar rel, and a second set of-pin tumblers slidably mounted within said case possessing a body diameter too great to move into locking engagement with said key barrel and provided with reduced ends to enter a short distance into said key barrel.

8. A cylinder lock, comprising. a lock case,-

a key barrel rotatable therein, pin tumblers slidably mounted in said case and movable into locking engagement with said key barrel, and a second set of pin tumblers slidably mounted in said case, said last mentioned pin tumblers constructed to. align with the pin tumbler. sockets of the key barrel but permitted to enter into frictional holding engagement only. with said key barrel.

9. A cylinder lock comprising a case, a key barrel rotatable therein, said key barrel provided with pin tumbler sockets, pin tumblers within said case for lockingsaid key barrel against rotation, and a second set of pin tumblers within said case constructed to frictionally engage said sockets but prevented from positively locking the same, whereby said key barrel may be rotated from its unlocked to its locked position without A the use of a key.

10. In a pin tumbler look, a case, a key a barrel rotatable therein, pin tumblers carried by said key barrel, and a second set of pin tumblers constructedfo enter a short distance into the key'barrel to force said first: mentioned pin tumblers within their tation, and additional pin tumblers carried by said case for frictionally engaging said sockets without positively locking the same.

, 12. In a cylinder look, a lock casing, a key barrel, cooperating pin tumblers slidably 'mounted in said casing and keybarrel, a second set of; pin tumblers slidably mounted in said casing constructed to frictionally en-' gage said key barrel to prevent the same from being accidentally rotated, and means for retaining said last mentioned pin tumblers at all times out of locking engagement with said key barrel.

13. A pin tumbler lock comprising a case, and a key. barrel therein, pin tumblers in said'case to lock said barrel against rotation, and additional pin tumblers to yieldably hold said barrel against rotation.

14. A pin tumbler lock comprising a case and a key barrel therein, pin tumblers in said case constructed to enter said key barrel to hold the same against rotation, said pins being constructed to be cammed out of engagement with said key barrel upon rotation thereof.

15. A pin tumbler lock comprising a case and a key barrel therein, pin tumblers in said case constructed to enter said key barrel to hold the same against rotation, said pins being constructed to be cammed out of engagement with said key barrel upon rotation thereof, and means, other than a key, to rotate said key barrel.

16. A pin tumbler'lock comprising a case and a key. barrel therein, pin tumblers in said case constructed to enter recesses in said key barrel to hold the same against rotation,

said pins being so shaped as to be cammed 

